A diaphragm member

Abstract

The application relates to a diaphragm piece which comprises a diaphragm body and a metal piece; the metal piece comprises a bolt head and a screw rod connected to the bolt head; the bolt head has a stepped structure which comprises an abutting part abutting against a mounting platform and a limiting part fixed to the diaphragm body, and the diameter of the limiting part is larger than that of the abutting part; the diaphragm body comprises an intermediate convex part and a deformation part connected to the outside of the intermediate convex part, and the intermediate convex part has an arrangement groove on the side facing the metal piece for the limiting part to be arranged in close contact. The application has the effect of prolonging the service life of the rubber diaphragm.

Description

Technical Field

[0001] This application relates to the field of rubber diaphragm technology, and in particular to a diaphragm component. Background Technology

[0002] The brake chamber is a core component of the vehicle control system. Its construction is based on a shell and cover made of thick steel plate, tightly connected by clamps and screws. Inside the shell is a rubber diaphragm that divides the entire housing into two isolated chambers. The rubber diaphragm is an elastic membrane installed within the brake chamber, primarily used to convert air pressure into mechanical force to actuate the brakes.

[0003] In existing technologies, to achieve the installation and function of a rubber diaphragm, the diaphragm typically has a central through-hole in its central region for connecting components to pass through, thus achieving a rigid connection between the diaphragm and the mounting platform. This method relies on the fastening force of the connecting components to maintain the diaphragm's position. The rubber diaphragm is usually made of rubber or rubber-fiber composite material, including a rubber body layer, a reinforcing layer, an adhesive layer, and a surface coating. The connecting components are typically metal.

[0004] Regarding the aforementioned technologies, the inventors believe that the above installation method makes the rubber diaphragm susceptible to wear from the connecting parts during deformation, thus requiring an improvement in the service life of the rubber diaphragm. Utility Model Content

[0005] In order to extend the service life of rubber diaphragms, this application provides a diaphragm component.

[0006] The diaphragm component provided in this application adopts the following technical solution:

[0007] A diaphragm component includes a diaphragm body and a metal component; the metal component includes a bolt head and a screw connected to the bolt head; the bolt head has a stepped structure, the stepped structure including an abutting portion abutting against an installation platform and a limiting portion fixed to the diaphragm body, and the diameter of the limiting portion is larger than the diameter of the abutting portion; the diaphragm body includes a central protrusion and a deformable portion connected to the outside of the central protrusion, the central protrusion having an arrangement groove on the side facing the metal component for the limiting portion to fit into.

[0008] By adopting the above technical solution, the diaphragm body and the metal part are integrally formed. By passing through and locking the screw of the metal part into the installation platform and making the abutting part abut against the installation platform, a rigid connection between the rubber diaphragm and the installation platform is achieved. During use, the diaphragm part deforms through the deformation part on the outer side of the middle protrusion of the diaphragm body. An arrangement groove is set in the middle protrusion of the diaphragm body, and the limiting part of the metal part is fixed in the arrangement groove, which achieves effective fixation between the diaphragm body and the metal part, and helps to extend the service life of the rubber diaphragm.

[0009] Optionally, the diaphragm body includes a rubber main body layer, a reinforcing layer, and a surface coating, wherein the reinforcing layer is disposed in the middle of the rubber main body layer; and the arrangement groove is disposed within the rubber main body layer.

[0010] By adopting the above technical solution, the specific structure of the diaphragm body is disclosed. A reinforcing layer is arranged in the middle of the rubber main body layer to improve the strength and durability of the diaphragm body. The arrangement groove is set in the rubber main body layer to further optimize the structural layout of the diaphragm component.

[0011] Optionally, the deformable portion has a first annular protrusion on the side opposite to the metal part, and the axis of the first annular protrusion coincides with the axis of the diaphragm body.

[0012] By adopting the above technical solution, the setting of the first annular protrusion improves the structural stability and buffering performance of the diaphragm component on the side facing away from the metal component, and enhances the overall reliability and durability of the diaphragm component.

[0013] Optionally, the deformable portion has a second annular protrusion on the side facing the metal part, which is arranged opposite to the first annular protrusion, and the axis of the second annular protrusion coincides with the axis of the diaphragm body.

[0014] By adopting the above technical solution, a second annular protrusion is provided on the side of the deformable part facing the metal part, which is directly opposite to the first annular protrusion and whose axis coincides with the axis of the diaphragm body. This can further enhance the stability and deformation resistance of the diaphragm, optimize the mechanical properties of the diaphragm, and improve the reliability of the diaphragm during operation.

[0015] Optionally, the number of the first annular protrusion and the number of the second annular protrusion are both not less than two.

[0016] By adopting the above technical solution, setting two or more first annular protrusions and second annular protrusions can further improve the strength and stability of the diaphragm body and optimize the deformation performance of the diaphragm component under stress.

[0017] Optionally, the diameter ratio of the intermediate protrusion to the diaphragm body is 1:2 to 1:3.

[0018] By adopting the above technical solution, the diameter ratio of the middle protrusion to the diaphragm body is set at 1:2 to 1:3, which can make the middle protrusion of the diaphragm component and the overall size achieve a better proportional relationship. This is beneficial for the diaphragm component to perform good deformation performance during operation, thereby ensuring the stability and functionality of the diaphragm component.

[0019] Optionally, the outer side of the connection between the intermediate protrusion and the deformable part has a chamfered structure.

[0020] By adopting the above technical solution, the chamfer structure on the outer side of the connection between the middle protrusion and the deformation part of the diaphragm component can reduce stress concentration, making the diaphragm component more durable during use, thereby helping to improve the structural stability and service life of the diaphragm component.

[0021] Optionally, the limiting portion has a first contact surface that adheres to the bottom surface of the arrangement groove, a second contact surface that adheres to the groove wall of the arrangement groove and is connected to the abutment portion, and a third contact surface that connects the first contact surface and the second contact surface; the abutment portion has a fourth contact surface that adheres to the groove wall of the arrangement groove and is connected to the second contact surface; the first contact surface, the second contact surface, the third contact surface, the fourth contact surface, and the groove wall surface of the arrangement groove are all coated with adhesive.

[0022] By adopting the above technical solution, the limiting part of the diaphragm component and the arrangement groove are bonded together on multiple surfaces through the first bonding surface, the second bonding surface, the third bonding surface, and the fourth bonding surface. Adhesive is applied to these bonding surfaces and the surface of the arrangement groove wall, which enhances the connection stability between the metal component and the diaphragm body, making the connection between the two tighter and stronger.

[0023] Optionally, the two ends of the limiting part have a chamfered structure.

[0024] By adopting the above technical solution, the chamfered structure at both ends of the limiting part can reduce stress concentration, reduce the probability of damage to the diaphragm body caused by the edge of the limiting part, and help extend the service life of the diaphragm component.

[0025] Optionally, the bottom of the limiting part has a frustum structure facing the side of the abutting part, and the angle of the frustum structure is about 175° to 180°.

[0026] By adopting the above technical solution, the bottom of the limiting part has a truncated cone structure with a specific angle facing the side of the contact part, which makes the connection between the metal part and the diaphragm body more stable and reasonable, and helps to enhance the stability and reliability of the overall structure of the diaphragm part.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. A diaphragm component, comprising a diaphragm body and a metal component; an arrangement groove is provided in the middle protrusion of the diaphragm body, and a limiting part of the metal component is fixed in the arrangement groove, thereby achieving effective fixation between the diaphragm body and the metal component, which helps to extend the service life of the rubber diaphragm.

[0029] 2. By arranging a reinforcing layer in the middle of the rubber main body layer and setting the arrangement groove in the rubber main body layer, the structural layout of the diaphragm component is further optimized while improving the strength and durability of the diaphragm body.

[0030] 3. By providing a first annular protrusion on the side of the deformed part facing away from the metal part, it helps to improve the structural stability and buffering performance of the diaphragm part facing away from the metal part, thereby enhancing the overall reliability and durability of the diaphragm part. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the diaphragm component in Example 1.

[0032] Figure 2 This is a schematic diagram of the installation of the limiting part and the arrangement groove in Embodiment 1.

[0033] Figure 3 yes Figure 1 Enlarged schematic diagram of the first and second annular protrusions at point A.

[0034] Figure 4 This is a side view of the second annular protrusion in Embodiment 1.

[0035] Figure 5 This is a schematic diagram of the diaphragm component in Example 2.

[0036] Figure 6 yes Figure 5 Enlarged schematic diagram of the slot and mounting through hole at point B.

[0037] Explanation of reference numerals in the attached drawings: 1. Diaphragm body; 11. Intermediate protrusion; 111. Arrangement groove; 112. Mounting through hole; 12. Deformation part; 121. First annular protrusion; 122. Second annular protrusion; 2. Metal part; 131. Rubber main body layer; 132. Reinforcing layer; 133. Surface coating; 21. Bolt head; 211. Limiting part; 2111. First mating surface; 2112. Second mating surface; 2113. Third mating surface; 2114. Slotted groove; 212. Abutment part; 2121. Fourth mating surface; 22. Screw; 221. Locking part; 222. Threaded part. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0039] This application discloses a diaphragm component.

[0040] Example 1

[0041] Reference Figure 1 The diaphragm component includes a diaphragm body 1 and a metal component 2. The metal component 2 includes a bolt head 21 and a screw 22 connected to the bolt head 21. The bolt head 21 includes a limiting part 211 fixed to the diaphragm body 1 and an abutting part 212 abutting against the mounting platform. The limiting part 211 is fixed inside the diaphragm body 1, and the abutting part 212 abuts against the mounting platform. This fit allows the diaphragm component to be securely mounted on the mounting platform. Furthermore, the diameter of the limiting part 211 is larger than the diameter of the abutting part 212, effectively preventing the diaphragm component from loosening or shifting on the mounting platform. The limiting part 211 has chamfered ends. The bottom of the limiting part 211 facing the abutting part 212 has a frustum structure with an angle of 179°. In this embodiment, the metal component 2 is made of CDA 360 alloy semi-hard brass. The screw 22 includes a locking part 221 and a threaded part 222 in the direction away from the bolt head 21. The diaphragm is installed on the mounting platform by arranging the locking part 221 inside the mounting platform and locking it with a nut on the threaded part 222, so that the abutting part 212 abuts against the mounting platform.

[0042] Reference Figure 1 The diaphragm body 1 includes a central protrusion 11 and a deformable portion 12 connected to the outside of the central protrusion 11. The diameter ratio of the central protrusion 11 to the diaphragm body 1 is 1:2 to 1:3. The outer side of the connection between the central protrusion 11 and the deformable portion 12 has a chamfered structure. The central protrusion 11 has an arrangement groove 111 on the side facing the metal part 2 for the fitting arrangement of the limiting portion 211 and the abutment portion 212. The structure of the central protrusion 11 and the deformable portion 12 of the diaphragm body 1 allows the diaphragm to better adapt to pressure changes and frequent deformations in complex working environments, reducing the problems of rupture and sealing failure.

[0043] Reference Figure 2 The limiting part 211 has a first contact surface 2111 that adheres to the bottom surface of the arrangement groove 111, a second contact surface 2112 that adheres to the groove wall of the arrangement groove 111 and is connected to the abutment part 212, and a third contact surface 2113 that connects the first contact surface 2111 and the second contact surface 2112. The abutment part 212 has a fourth contact surface 2121 that adheres to the groove wall of the arrangement groove 111 and is connected to the second contact surface 2112. The surfaces of the first contact surface 2111, the second contact surface 2112, the third contact surface 2113, the fourth contact surface 2121, and the groove wall of the arrangement groove 111 are all coated with adhesive. In this embodiment, the adhesive type is THIXONP-14.

[0044] Reference Figure 2The diaphragm body 1, from the inside out along its thickness direction, consists of a rubber main layer 131, a reinforcing layer 132, another rubber main layer 131, and a surface coating 133. A groove 111 is arranged within the rubber main layer 131. In this embodiment, the rubber main layer 131 is made of chlorosulfonated polyethylene rubber (CSM), a special rubber material with good elasticity and sealing properties. The reinforcing layer 132 is a woven polyester fiber fabric, which improves the overall strength and tear resistance of the diaphragm body 1. The diaphragm body 1 is bonded to the rubber main layer 131 and the reinforcing layer 132 using a vulcanization molding process. The surface coating 133 is a polytetrafluoroethylene layer, which improves the wear resistance, corrosion resistance, and anti-adhesion properties of the diaphragm body 1.

[0045] Reference Figure 3 and Figure 4 The deformable portion 12 has a first annular protrusion 121 on the side facing the surface coating 133. The first annular protrusion 121 is an annular raised structure, which can increase the friction and sealing performance when the rubber body layer 131 comes into contact with the outside. The deformable portion 12 has a second annular protrusion 122 on the side facing the metal part 2, which is directly opposite to the first annular protrusion 121. The cross-sectional shape of both the first annular protrusion 121 and the second annular protrusion 122 is semi-circular, and the thickness of the first annular protrusion 121 is greater than the thickness of the second annular protrusion 122. The axis of the first annular protrusion 121 and the axis of the second annular protrusion 122 are both coincident with the axis of the diaphragm body 1. The structure and function of the second annular protrusion 122 are similar to those of the first annular protrusion 121. It is directly opposite to the first annular protrusion 121 and can further enhance the sealing performance and structural stability of the deformable portion 12. In this embodiment, there are two of each of the first annular protrusion 121 and the second annular protrusion 122. Both the first annular protrusion 121 and the second annular protrusion 122 are manufactured by integral molding with the deformable part 12.

[0046] The implementation principle of Example 1 is as follows: The diaphragm body 1 and the metal part 2 are integrally formed. By passing through and locking the screw 22 of the metal part 2 into the mounting platform and making the abutment part 212 abut against the mounting platform, a rigid connection between the rubber diaphragm and the mounting platform is achieved. The diaphragm part is installed on the mounting platform by arranging the locking part 221 inside the mounting platform and setting a nut on the threaded part 222 to lock it, so that the abutment part 212 abuts against the mounting platform. During use, the diaphragm part deforms through the deformation part 12 on the outside of the middle protrusion 11 of the diaphragm body 1. The reinforcement layer 32 and the first annular protrusion 121 and the second annular protrusion 122 arranged in the deformation part 12 further enhance the structural strength of the deformation part 12 and extend the service life of the diaphragm body 1. An arrangement groove 111 is provided in the middle protrusion 11 of the diaphragm body 1, and the limiting part 211 of the metal part 2 is fixed in the arrangement groove 111, which realizes the effective fixation between the diaphragm body 1 and the metal part 2, which helps to further extend the service life of the rubber diaphragm.

[0047] Example 2

[0048] Reference Figure 5 and Figure 6 The difference between this embodiment and Embodiment 1 is that a slot 2114 is formed at the top of the limiting part 211 of the metal part 2. The middle protrusion 11 has a mounting through hole 112 at the bottom of the mounting groove that is arranged to cooperate with the slot 2114, and the diameter of the mounting through hole 112 is larger than the width of the slot 2114. This makes it less likely that the inner wall of the mounting through hole 112 of the diaphragm body 1 will be worn when the screw 22 of the metal part 2 is tightened into the mounting hole of the mounting platform through the slot 2114. This improves the installation method of the diaphragm part on the mounting platform and reduces the impact on the service life of the diaphragm part.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A diaphragm component, characterized in that, The diaphragm body (1) and a metal part (2) are included. The metal part (2) includes a bolt head (21) and a screw (22) connected to the bolt head (21). The bolt head (21) has a stepped structure, which includes an abutting part (212) that abuts against the mounting platform and a limiting part (211) that is fixed to the diaphragm body (1). The diameter of the limiting part (211) is larger than the diameter of the abutting part (212). The diaphragm body (1) includes a central protrusion (11) and a deformable part (12) connected to the outside of the central protrusion (11). The central protrusion (11) has an arrangement groove (111) on the side facing the metal part (2) for the limiting part (211) to fit together.

2. The diaphragm component according to claim 1, characterized in that, The diaphragm body (1) includes a rubber main body layer (131), a reinforcing layer (132) and a surface coating (133), wherein the reinforcing layer (132) is arranged in the middle of the rubber main body layer (131); and the arrangement groove (111) is arranged in the rubber main body layer (131).

3. A diaphragm component according to claim 1, characterized in that, The deformable part (12) has a first annular protrusion (121) on the side facing away from the metal part (2), and the axis of the first annular protrusion (121) coincides with the axis of the diaphragm body (1).

4. A diaphragm component according to claim 3, characterized in that, The deformable part (12) has a second annular protrusion (122) on the side facing the metal part (2) that is directly opposite to the first annular protrusion (121), and the axis of the second annular protrusion (122) coincides with the axis of the diaphragm body (1).

5. A diaphragm component according to claim 4, characterized in that, The number of the first annular protrusion (121) and the number of the second annular protrusion (122) are both not less than two.

6. A diaphragm component according to claim 1, characterized in that, The diameter ratio of the intermediate protrusion (11) to the diaphragm body (1) is 1:2 to 1:

3.

7. A diaphragm component according to claim 1, characterized in that, The outer side of the connection between the intermediate protrusion (11) and the deformable part (12) has a chamfered structure.

8. A diaphragm component according to claim 1, characterized in that, The limiting part (211) has a first fitting surface (2111) that fits against the bottom surface of the arrangement groove (111), a second fitting surface (2112) that fits against the groove wall of the arrangement groove (111) and is connected to the abutment part (212), and a third fitting surface (2113) that connects the first fitting surface (2111) and the second fitting surface (2112). The abutment part (212) has a fourth fitting surface (2121) that fits against the groove wall of the arrangement groove (111) and is connected to the second fitting surface (2112). The first fitting surface (2111), the second fitting surface (2112), the third fitting surface, the fourth fitting surface (2121), and the groove wall surface of the arrangement groove (111) are all coated with adhesive.

9. A diaphragm component according to claim 8, characterized in that, The limiting part (211) has chamfered structures at both ends.

10. A diaphragm component according to claim 8, characterized in that, The bottom of the limiting part (211) facing the side of the abutting part (212) has a frustum structure, and the angle of the frustum structure is about 175° to 180°.

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